Disk clamp having uniform clamping load and index mark
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United States of America Patent
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Sep 2, 2014
Grant Date -
Oct 17, 2013
app pub date -
Apr 12, 2012
filing date -
Apr 12, 2012
priority date (Note) -
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Abstract
A disk clamp for clamping a number of magnetic hard disks within a disk drive has a plurality of balance weight holes and a coined index mark for use as a reference in balancing the hard disks after assembly. The disk clamp also has a coined profile located adjacent or around the balance weight holes in order to provide uniform circumferential clamp force by the disk clamp. The disk clamp has a profile that places the inner region of the disk clamp in the plastic deformation region at a certain specified clamping force at the center of the disk clamp.
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